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Exhaust› Headers, Manifolds and Components

Kooks

Green Catted X-Pipe Long Tube Headers

$4,196.00 $3,707.80 Save $488.20

SKU: 1141H630

Special Order
Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Kooks 1141H630 is a set of long tube headers for the 2011-2014 Ford Mustang GT. Constructed from T-304 stainless steel, these headers are designed to optimize scavenging and increase power. The kit includes a GREEN Catted X-Pipe, O2 extensions, gaskets, and all necessary installation hardware.
Show original supplier description
Kooks Headers offers these 2" x 3" long tube headers, part number 1141H630, specifically designed for the 2011-2014 Ford Mustang GT. Constructed from T-304 stainless steel, these headers are engineered to optimize exhaust scavenging, leading to significant power gains. The "Kooks Green Cat" features a coating with precious metals for efficient catalytic conversion and can withstand the increased heat of high horsepower and forced induction applications. This kit includes a 3" x 2-3/4" GREEN Catted X-Pipe, O2 extensions, gaskets, and all the installation hardware required for a complete setup. Kooks Headers utilizes laser-cut 3/8” thick stainless steel flanges to prevent warping and hand grinds each port for a smooth, unrestricted exhaust flow. Each header collector features a Kooks scavenging spike to ensure maximum flow. While Kooks products are dyno and race tested for maximum power and backed by a limited lifetime warranty to the original purchaser, it is important to note that these products are NOT legal for sale, installation, or use on a licensed vehicle in the state of California and do NOT meet CARB compliance. The "SPECS" section of the product page incorrectly lists the Engine Type as Ford 4.0L V6; fitment is confirmed for the 2011-2014 Ford Mustang GT 5.0L 4V.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKooks
Part Number1141H630
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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